Reduces cash requirement
A full-standby seller note covering 5% of the purchase price allows the buyer's cash injection to drop from 10% to 5%, effectively doubling the buyer's purchasing power per dollar of liquid assets.
SBA deal structure
SBA Seller Note Requirements
A seller note can reduce the buyer's cash requirement and help bridge a valuation gap — but only when structured correctly. Here is what full standby means, how lenders verify it, and when seller financing actually helps.
SBA SOP 50 10 guidelines
Full-standby rules
Updated June 2026
What is a seller note?
Seller financing in SBA acquisitions
A seller note — also called seller financing or a vendor take-back — is a loan from the seller to the buyer, secured by the business being acquired. The buyer pays a portion of the purchase price to the seller over time, rather than at closing. In SBA acquisitions, seller notes serve two distinct purposes: they can reduce the buyer's required equity injection, and they can bridge a valuation gap when the business's appraised value or financeable amount is below the asking price. Whether a seller note actually helps depends almost entirely on whether it meets SBA's standby requirements.
Bridges valuation gaps
When the purchase price exceeds the financeable amount at 1.25x DSCR, a seller note on the excess can make the SBA portion of the deal work — as long as the note payments don't immediately add to debt service.
Requires standby compliance
A seller note that doesn't meet SBA's full-standby requirements doesn't count as equity — it is treated as additional debt, which reduces DSCR and may make the deal unfindable.
The standby rules
Full standby vs. partial standby
SBA SOP 50 10 distinguishes between full standby and partial standby seller notes. This distinction determines whether the note counts as equity injection and how it affects the DSCR calculation.
- Full standby: The seller agrees to make no principal or interest payments during the standby period — typically the first 24 months (two years) of the SBA loan term. The note is completely subordinate to the SBA loan during that period. A full-standby seller note covering the 5% equity requirement counts as equity injection, allowing the buyer's cash to drop to 5%. This is the only note structure that reduces the cash requirement.
- Partial standby: The seller allows some payments — typically interest only — during the standby period. SBA may allow partial-standby structures in some cases, but a partial-standby note does not count toward the equity injection. It is treated as additional debt and the annual interest payments are added to the buyer's total debt service, reducing DSCR on the SBA loan.
- No standby (current-pay note): A seller note that allows full payments of principal and interest from day one does not count as equity and significantly increases the annual debt service the business must cover. At 1.25x DSCR, every additional dollar of annual debt service reduces the maximum SBA loan by $1.25.
- The standby period length: SBA requires the standby period to cover at least the first two years of the SBA loan. Some lenders require longer standby periods — particularly on larger deals or in cases where DSCR is close to the 1.25x threshold. Confirm the lender's specific standby requirement before structuring the note.
How it affects equity
How the seller note counts toward equity injection
The equity injection calculation is central to whether a seller note actually helps the buyer. The SBA rule is straightforward, but how lenders interpret "full standby" and documentation requirements varies.
- The 5/5 structure: The most common seller note structure in SBA deals is 5% buyer cash + 5% seller note on full standby = 10% total equity injection, satisfying SBA's minimum. The seller note covers exactly the 5% gap between what the buyer can pay in cash and the 10% floor. The buyer's cash drops by half while the total equity injection remains at 10%.
- Example — $1,000,000 purchase price: Standard structure: buyer pays $100,000 cash (10%). With full-standby seller note: buyer pays $50,000 cash (5%) + seller carries $50,000 note on full standby (5%) = $100,000 total equity. The buyer needs only $50,000 in cash at closing for the equity injection, plus closing costs.
- The seller note must be documented: Lenders require a promissory note executed at closing, a subordination agreement placing the seller note behind the SBA loan, and a full-standby agreement specifying that no payments will be made during the standby period. Verbal seller agreements do not satisfy the documentation requirement.
- Seller note does not reduce the purchase price: A common misconception is that a seller note means the seller is taking less for the business. The seller receives the same total consideration — they are simply being paid a portion over time rather than entirely at closing. The purchase price in the purchase agreement remains the same.
DSCR after standby ends
What happens when the seller note comes off standby
The most commonly overlooked issue with seller note deals is the DSCR impact when the standby period ends and seller note payments begin. Lenders are supposed to underwrite to this scenario — but not all do, and some buyers don't model it at all.
- DSCR changes after standby: When the seller note enters repayment — typically in year three of the SBA loan — the business must now service both the SBA loan and the seller note. If the deal was structured right at 1.25x DSCR on the SBA loan alone, adding seller note payments could push total DSCR below 1.0x.
- Model the blended DSCR: Calculate the combined annual debt service of SBA loan + seller note payments after the standby period. The business's SDE needs to cover both at 1.25x for the deal to be truly serviceable long-term. If it can't, the seller note may need to be extended, the purchase price renegotiated, or the note interest rate reduced.
- Some lenders underwrite to combined DSCR: Sophisticated SBA lenders will test the combined DSCR as part of their initial underwriting — including the full seller note payment in year three onward. If your lender isn't modeling this, the deal may pass underwriting but encounter cash flow problems two years post-close.
- The fix: Seller note terms can be structured to minimize the post-standby DSCR impact. A longer amortization period (10–15 years instead of 5–7) reduces the annual payment. A lower interest rate reduces the payment further. Some sellers agree to interest-only post-standby if the business hasn't grown sufficiently. These are negotiated terms — but they need to be agreed at LOI, not at closing.
What lenders verify
Lender review of seller note terms
Lenders don't take a seller note at face value. They review the note terms, the subordination agreement, and the standby documentation before accepting the note as equity.
Executed promissory note
The note must be executed at or before closing. It must specify the principal amount, interest rate, repayment terms, and the full-standby period with no payment obligations during those years.
Subordination agreement
The seller must sign a subordination agreement placing their note behind the SBA lender in priority. Without this, the seller note is a senior or pari passu obligation — unacceptable to SBA.
Standby agreement
A separate standby agreement confirming that no principal or interest payments will be made during the standby period. This is distinct from the subordination agreement and is required by most lenders.
Seller's tax impact
Lenders don't require this, but the seller should understand that an installment sale structure affects how they report the gain — consult a tax advisor before agreeing to seller note terms.
Seller note as collateral
In some deals the lender may ask the seller to pledge additional collateral against the seller note, or require a personal guarantee from the seller. This is more common on larger or higher-risk deals.
Seller creditworthiness
For deals where the seller note is unusually large, some lenders conduct basic due diligence on the seller's ability to perform on any representations and warranties — particularly if there is a material indemnification clause tied to post-close earnings.
Reviewed by: Emporio Partners
Emporio Partners provides SBA acquisition financing readiness support. Seller note structures are subject to lender-specific requirements in addition to SBA SOP 50 10 guidelines.
This guide is for planning and educational purposes only. It is not a loan approval, pre-approval, commitment to lend, or guarantee of financing. Emporio Partners is not a lender or bank and does not issue loan approvals. Seller note terms, standby requirements, and equity injection credit are determined by the participating lender after full underwriting review. Consult a qualified attorney and tax advisor before structuring a seller note.
Related tools and guides